The flagship store in the city centre is set to double in size and take on 100 new workers
Primark on Castle Street will get even bigger as expansion plans begin.
It will see it grow by over thirty thousand square feet.
The retailer gained planning permission to build its extension on the site of Commonwealth House, behind the current store.
The project comprises the demolition of the house and development of a new six-storey retail building.
It means one lane on Castle Street will be closed and the implementation of a one-way traffic system.
Two men charged after violent incident in Belfast shopping centre car park
Man in hospital following overnight assault in North Belfast
Sinn Fein not fielding candidates in four Northern Ireland seats at election
Lyra McKee murder trial opens in Belfast